Ground fault detection method for power distribution network power transmission line
A ground fault and transmission line technology, which is applied in the field of detection of ground faults in distribution network transmission lines, can solve the problems of heavy workload of inspection personnel, achieve the effects of reducing daily maintenance workload, shortening maintenance time during power outages, and improving work efficiency
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[0014] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0015] A method for detecting a ground fault of a transmission line in a distribution network, comprising the following steps:
[0016] Step 1, collect the three-phase current value in the transmission line in real time;
[0017] Step 2, detect the ground fault according to the sampled three-phase current, and obtain the time point t corresponding to the moment when the ground fault has just been detected;
[0018] Step 3. Determine whether it is a single-phase ground fault or a two-phase ground fault according to the three phase c...
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